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Finding the Fourth Proportional to 484.98, 723.68 and 426.66

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Solution

The fourth proportional to 484.98, 723.68 and 426.66 is: 636.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.98 : 723.68 = 426.66 : x
  2. Step 2: Convert to fraction form
    484.98/723.68 = 426.66/x
  3. Step 3: Cross multiply
    484.98x = 723.68 × 426.66
  4. Step 4: Simplify right side
    484.98x = 308,763.18
  5. Step 5: Solve for x
    x = 308,763.18/484.98
  6. Step 6: Final answer
    x = 636.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.